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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
07/05/2015 |
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Data da última atualização: |
29/03/2016 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PINHEIRO, K. M.; SILVA, T. G. F. da; DINIZ, W. J. da S.; CARVALHO, H. F. de S.; MOURA, M. S. B. de. |
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Afiliação: |
KARINA MENDES PINHEIRO, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, Serra Talhada, PE; THIERES GEORGE FREIRE DA SILVA, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, Serra Talhada, PE; WELLINGTON JAIRO DA SILVA DINIZ, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, Serra Talhada, PE; HERICA FERNANDA DE SOUSA CARVALHO, Universidade Federal Rural de Pernambuco, Unidade Acadêmica de Serra Talhada, Serra Talhada, PE; MAGNA SOELMA BESERRA DE MOURA, CPATSA. |
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Título: |
Indirect methods for determining the area index of forage cactus cladodes. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Tropical, Goiânia, v. 45, n. 2, p. 163-171, abr./jun. 2015. |
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DOI: |
10.1590/1983-40632015v4530617 |
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Idioma: |
Inglês |
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Conteúdo: |
Methods for determining leaf area index have been applied to various agricultural crops. However, their uses are limited to broadleaf plants, with no record for forage cactus, whose radiation interception is performed by the cladode. This study aimed to evaluate the use of different indirect methods to estimate the area index of forage cactus cladode. Cladodes from clones of Nopalea cochenillifera Salm Dyck, Nopalea cochenillifera Salm Dyck and Opuntia stricta (Haw) Haw were used, being sampled sixty plants per clone, distributed in five sub-areas with 12 plants. Light interception methods with different measurement techniques were evaluated, as well as the planimetric, leaf discs and odeling methods. The estimate of area index of the forage cactus cladode by the modeling method was considered the most accurate one, for presenting precision coefficient values and accuracy above 0.90, as well as a performance varying from very good to excellent. However, its applicability depends on the use of estimated parameters or adjusted value equations. The methods of light interception and its derivations, leaf discs of medium cladodes and planimetry of medium cladodes are not recommended, due to their low precision and accuracy. |
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Palavras-Chave: |
Analisador de dossel; Canopy analyzer; Destructive method; Indice de área cladódio; Método destrutivo; Nopalea. |
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Thesagro: |
Palma forrageira. |
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Thesaurus Nal: |
Opuntia. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/123372/1/Magna-2015.pdf
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Marc: |
LEADER 02100naa a2200277 a 4500
001 2014966
005 2016-03-29
008 2015 bl uuuu u00u1 u #d
024 7 $a10.1590/1983-40632015v4530617$2DOI
100 1 $aPINHEIRO, K. M.
245 $aIndirect methods for determining the area index of forage cactus cladodes.$h[electronic resource]
260 $c2015
520 $aMethods for determining leaf area index have been applied to various agricultural crops. However, their uses are limited to broadleaf plants, with no record for forage cactus, whose radiation interception is performed by the cladode. This study aimed to evaluate the use of different indirect methods to estimate the area index of forage cactus cladode. Cladodes from clones of Nopalea cochenillifera Salm Dyck, Nopalea cochenillifera Salm Dyck and Opuntia stricta (Haw) Haw were used, being sampled sixty plants per clone, distributed in five sub-areas with 12 plants. Light interception methods with different measurement techniques were evaluated, as well as the planimetric, leaf discs and odeling methods. The estimate of area index of the forage cactus cladode by the modeling method was considered the most accurate one, for presenting precision coefficient values and accuracy above 0.90, as well as a performance varying from very good to excellent. However, its applicability depends on the use of estimated parameters or adjusted value equations. The methods of light interception and its derivations, leaf discs of medium cladodes and planimetry of medium cladodes are not recommended, due to their low precision and accuracy.
650 $aOpuntia
650 $aPalma forrageira
653 $aAnalisador de dossel
653 $aCanopy analyzer
653 $aDestructive method
653 $aIndice de área cladódio
653 $aMétodo destrutivo
653 $aNopalea
700 1 $aSILVA, T. G. F. da
700 1 $aDINIZ, W. J. da S.
700 1 $aCARVALHO, H. F. de S.
700 1 $aMOURA, M. S. B. de
773 $tPesquisa Agropecuária Tropical, Goiânia$gv. 45, n. 2, p. 163-171, abr./jun. 2015.
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Embrapa Semiárido (CPATSA) |
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| 1. |  | PINHEIRO, K. M.; SILVA, T. G. F. da; DINIZ, W. J. da S.; CARVALHO, H. F. de S.; MOURA, M. S. B. de. Indirect methods for determining the area index of forage cactus cladodes. Pesquisa Agropecuária Tropical, Goiânia, v. 45, n. 2, p. 163-171, abr./jun. 2015.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
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